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Abstract:

A single-phase electronic power-saving device includes at least one
power-saving unit. The power-saving unit includes two ceramic piece
capacitors, a safe capacitor, an inductor, a SCR, a first resistor, a
second resistor, a live wire and a zero line; the two ceramic piece
capacitors connected in series as a whole is connected in parallel with
the safe capacitor to two terminals of which are connected the anode and
the cathode of SCR, respectively; the anode of SCR is also connected to
one terminal of the inductor, the branch composed of the first and the
second resistors connected in series is connected in parallel so that one
terminal of which is connected to one terminal of the inductor and the
other is connected to the cathode of SCR; the gate of SCR is connected
between the first and the second resistors.

Claims:

1-10. (canceled)

11. An electronic power-saving device, comprising at least one
power-saving unit which comprises:two ceramic capacitors being
electrically connected in series;a safety capacitor electrically
connected to said two ceramic capacitors in parallel,an inductor,a
silicon controlled rectifier (SCR), wherein two terminals of said safety
capacitor are electrically connected with anode and cathode of said SCR
respectively, wherein said anode of said SCR is electrically connected to
one terminal of said inductor; andfirst and second resistors electrically
connected in series, wherein said first and second resistors are
electrically connected with said anode and said cathode of said SCR
respectively, wherein the gate of said SCR is electrically connected with
the junction of said first and second resistors.

12. The electronic power-saving device, as recited in claim 11, wherein
said power-saving unit further comprises a live wire and a neutral wire
electrically connected with two terminals of said ceramic capacitors
respectively, and a fuse electrically connected with said live wire in
series.

13. The electronic power-saving device, as recited in claim 12, wherein
said power-saving unit further comprises an indicator having a terminal
electrically connected with the junction of said second resistor and said
safety capacitor, a third resistor having one terminal electrically
connected with said indicator in series and another terminal electrically
connected with the junction of said first resistor and said inductor, and
a ground wire arrangement made of metal.

14. An electronic power-saving device, comprising two power-saving units
electrically coupled with each other, wherein each of said power-saving
units comprises:two ceramic capacitors being electrically connected in
series;a safety capacitor electrically connected to said two ceramic
capacitors in parallel,an inductor,a silicon controlled rectifier (SCR),
wherein two terminals of said safety capacitor are electrically connected
with anode and cathode of said SCR respectively, wherein said anode of
said SCR is electrically connected to one terminal of said inductor;
andfirst and second resistors electrically connected in series, wherein
said first and second resistors are electrically connected with said
anode and said cathode of said SCR respectively, wherein the gate of said
SCR is electrically connected with the junction of said first and second
resistors.

15. The electronic power-saving device, as recited in claim 14, wherein
each of said power-saving units further comprises a live wire and a
neutral wire electrically connected with two terminals of said ceramic
capacitors respectively, and a fuse electrically connected with said live
wire in series.

16. The electronic power-saving device, as recited in claim 15, wherein
each of said power-saving units further comprises an indicator having a
terminal electrically connected with the junction of said second resistor
and said safety capacitor, a third resistor having one terminal
electrically connected with said indicator in series and another terminal
electrically connected with the junction of said first resistor and said
inductor, and a ground wire arrangement made of metal.

17. The electronic power-saving device, as recited in claim 16, wherein
said power-saving units are electrically connected in series that said
ceramic capacitors of one of said power-saving units are electrically
connected with said ceramic capacitors of another said power-saving unit
in parallel.

18. The electronic power-saving device, as recited in claim 14, wherein
one of said power-saving units is a strong power-saving unit while
another said power-saving unit is a weak power-saving unit, wherein the
charge of said ceramic capacitors, said safety capacitor, said inductor,
and said SCR of said strong power-saving unit is larger than the charge
of said ceramic capacitors, said safety capacitor, said inductor, and
said SCR of said weak power-saving unit.

19. The electronic power-saving device, as recited in claim 17, wherein
one of said power-saving units is a strong power-saving unit while
another said power-saving unit is a weak power-saving unit, wherein the
charge of said ceramic capacitors, said safety capacitor, said inductor,
and said SCR of said strong power-saving unit is larger than the charge
of said ceramic capacitors, said safety capacitor, said inductor, and
said SCR of said weak power-saving unit.

20. The electronic power-saving device, as recited in claim 14, wherein
said power-saving units have the same capability.

21. The electronic power-saving device, as recited in claim 17, wherein
said power-saving units have the same capability.

22. The electronic power-saving device, as recited in claim 14, wherein
said power-saving units have different capabilities.

23. The electronic power-saving device, as recited in claim 17, wherein
said power-saving units have the different capabilities.

24. An electronic power-saving device, comprising three power-saving units
to form a three-phase power saving unit, wherein each of said
power-saving units comprises:two ceramic capacitors being electrically
connected in series;a safety capacitor electrically connected to said two
ceramic capacitors in parallel,an inductor,a silicon controlled rectifier
(SCR), wherein two terminals of said safety capacitor are electrically
connected with anode and cathode of said SCR respectively, wherein said
anode of said SCR is electrically connected to one terminal of said
inductor; andfirst and second resistors electrically connected in series,
wherein said first and second resistors are electrically connected with
said anode and said cathode of said SCR respectively, wherein the gate of
said SCR is electrically connected with the junction of said first and
second resistors.

25. The electronic power-saving device, as recited in claim 24, wherein
each of said power-saving units further comprises a live wire and a
neutral wire electrically connected with two terminals of said ceramic
capacitors respectively, and a fuse electrically connected with said live
wire in series, wherein said three neutral wires of said power-saving
units are electrically connected together to form a common neutral wire.

26. The electronic power-saving device, as recited in claim 25, wherein
said three live wires of said power-saving units are electrically
extended in parallel.

27. The electronic power-saving device, as recited in claim 24, wherein
said power-saving units have the same capability.

28. The electronic power-saving device, as recited in claim 26, wherein
said power-saving units have the same capability.

29. The electronic power-saving device, as recited in claim 24, wherein
said power-saving units have different capabilities.

30. The electronic power-saving device, as recited in claim 26, wherein
said power-saving units have the different capabilities.

Description:

BACKGROUND OF THE PRESENT INVENTION

[0001]1. Field of Invention

[0002]The present invention relates to a power-saving device, and more
particularly to a single-phase electronic power-saving device, and a
three-phase electronic power-saving device.

[0003]2. Description of Related Arts

[0004]Shortages of power sources, including electrical power, are always a
problem. It is a trend to utilize scientific technology to save energy,
prevent waste, and protect electric devices, in order to achieve
environmental protection. In China, a large amount of devices are
consuming much more electrical power comparing to the similar devices
used in developed countries. The electrical power consuming in
residential and commercial fields are also extremely demanding.
Unfortunately, most of electrical systems have no power-saving processes,
and cause a lot power waste. As a result, the consequent pollution is
also increasing. At present, 70% of electrical power used in China is
produced by burning coal. To produce every 1 kWh of electric energy, it
will emit 1100 g of CO2, about 9 g of SO2, and about 4.4 g of
nitrogen oxides into the air.

[0005]There are some power-saving devices in the market. For example,
single function power-saving devices such can be used for air
conditioners and refrigerators, or energy saving bulbs. But these
devices, no matter is single-phase or three-phase, are all share the
problems such as complex, expensive, limited application, and are hard to
promote.

SUMMARY OF THE PRESENT INVENTION

[0006]In order to overcome the disadvantages, the present invention
provides an improved electronic single-phase or three-phase power-saving
device.

[0007]In one objective, the present invention provides an electronic
power-saving device, which comprises at least one power-saving unit. The
power-saving unit comprises two ceramic capacitors, a safety capacitor,
an inductor, a silicon controlled rectifier (SCR), a first resistor, a
second resistor, a live wire, a neutral wire, and a fuse. The two ceramic
capacitors are electrically connected in series, and as a whole are
electrically connected with the safety capacitor in parallel. The two
terminals are then electrically connected with the anode and the cathode
of the SCR respectively. The anode of the SCR is also electrically
connected to one terminal of the inductor. The first and second resistors
are electrically connected in series and then electrically connected with
the anode and cathode of the SCR respectively. The gate of the SCR is
electrically connected with the junction of the first and second
resistors. The two terminals of the two ceramic capacitors in series are
further electrically connected with the live wire and the neutral wire
respectively. The fuse is electrically connected with the live wire in
series.

[0008]Preferably, the device further comprises an indicator, and a ground
wire arrangement. The indicator is electrically connected with a third
resistor in series. Another terminal of the third resistor is
electrically connected with the junction of the first resistor and the
inductor. Another terminal of the indicator is electrically connected
with the junction of the second resistor and the safety capacitor. The
ground wire arrangement is made of metal and encircles the elements of
the device.

[0009]In another objective, the present invention provides an electronic
power-saving device, which comprises at least two power-saving units.
Each power-saving unit comprises two ceramic capacitors, a safety
capacitor, an inductor, an SCR, a first resistor, a second resistor, a
live wire, a neutral wire, and a fuse. The two ceramic capacitors are
electrically connected in series, and as a whole are electrically
connected with the safety capacitor in parallel. The two terminals are
then electrically connected with the anode and the cathode of the SCR
respectively. The anode of the SCR is also connected to one terminal of
the inductor. The first and second resistors are electrically connected
in series and then electrically connected with the anode and cathode of
the SCR respectively. The gate of the SCR is electrically connected with
the junction of the first and second resistors. The two terminals of the
two ceramic capacitors in series are further electrically connected with
the live wire and the neutral wire respectively. The fuse is electrically
connected with the live wire in series.

[0010]Preferably, each power-saving unit of the device further comprises
an indicator, and a ground wire arrangement. The indicator is
electrically connected with a third resistor in series. Another terminal
of the third resistor is electrically connected with the junction of the
first resistor and the inductor. Another terminal of the indicator is
electrically connected with the junction of the second resistor and the
safety capacitor. The ground wire arrangement is made of metal and
encircles the elements of the device.

[0011]Preferably, the two power-saving units have the same capability, or
have different capabilities.

[0012]Preferably, the device comprises at least three power-saving units.
These power-saving units are electrically connected parallelly by the two
terminals of the two ceramic capacitors in series, and are also
electrically connected with the live wire and the neutral wire
respectively.

[0013]In another objective, the present invention provides a three-phase
electronic power-saving device, which comprises three single-phase
electronic power-saving devices. Each single-phase electronic
power-saving device comprises at least two power-saving units. Each
power-saving unit comprises two ceramic capacitors, a safety capacitor,
an inductor, an SCR, a first resistor, a second resistor, a live wire, a
neutral wire, and a fuse. The two ceramic capacitors are electrically
connected in series, and as a whole are electrically connected with the
safety capacitor in parallel. The two terminals are then electrically
connected with the anode and the cathode of the SCR respectively. The
anode of the SCR is also electrically connected to one terminal of the
inductor. The first and second resistors are electrically connected in
series and then connected with the anode and the cathode of the SCR
respectively. The gate of the SCR is electrically connected with the
junction of the first and second resistors. The two terminals of the two
ceramic capacitors in series are further electrically connected with the
live wire and the neutral wire respectively. The fuse is connected with
the live wire in series.

[0014]Preferably, the device further comprises a ground wire arrangement
which is made of metal and encircles the elements of the device. Each
power-saving unit of every single-phase electronic power-saving device
further comprises an indicator. The indicator is electrically connected
with a third resistor in series. Another terminal of the third resistor
is electrically connected with the junction of the first resistor and the
inductor. Another terminal of the indicator is electrically connected
with the junction of the second resistor and the safety capacitor.

[0015]Preferably, the two power-saving units in each single-phase
electronic power-saving device are the same, or have different
capabilities.

[0016]Preferably, each single-phase electronic power-saving device
comprises at least three power-saving units. These power-saving units are
electrically connected parallelly by the two terminals of the two ceramic
capacitors in series, and are also electrically connected with the live
wire and the neutral wire respectively.

[0017]The present invention provides a single-phase or three-phase
electronic power-saving device. It integrates the power-saving elements
to regulate the current in complex and multi level process. The device
can stabilize the waved voltage and the pulse current, decrease the
temperature of the wires, reduce the power waste, and protect the
equipments. The power-saving efficiency is generally 20% to 30%.

[0018]These and other objectives, features, and advantages of the present
invention will become apparent from the following detailed description,
the accompanying drawings, and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

[0019]FIG. 1 is a circuit diagram of the single-phase electronic
power-saving device of the first embodiment of the present invention.

[0020]FIG. 2 is a circuit diagram of the single-phase electronic
power-saving device of the second embodiment of the present invention.

[0021]FIG. 3 is a circuit diagram of the three-phase electronic
power-saving device of the present invention.

[0022]FIGS. 4 to 6 illustrate the concepts of the present invention to
save power.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0023]Referring to FIGS. 1 to 6 of the drawings, a single-phase electronic
power-saving device and a three-phase electronic power-saving device,
according to a preferred embodiment of the present invention are
illustrated.

[0024]Referring to FIG. 1, the first embodiment of the single-phase
electronic power-saving device is illustrated. The single-phase
electronic power-saving device comprises two ceramic capacitors 1, a
safety capacitor 2, an inductor 3, a SCR 4, a first resistor 5, a second
resistor 6, an indicator 7, a ground wire arrangement 8, a live wire 9, a
neutral wire 10, a fuse 11, and a third resistor 12. In this embodiment,
the first resistor is 1K and the second resistor is 1M, wherein these two
resistors are used to divide voltage. The two ceramic capacitors 1 are
electrically connected in series, and then are electrically connected
with the safety capacitor 2 in parallel. Between the safety capacitor 2
and the ceramic capacitor 1, there is also an inductor 3 are electrically
connected. The two terminals of the safety capacitor 2 are then
electrically connected with the anode and cathode of the SCR 4
respectively. The anode of the SCR 4 is also electrically connected to
one terminal of the inductor 3. The second resistor 6 and the first
resistor 5 are electrically connected in series and then connected with
the anode and cathode of the SCR 4 respectively. The gate of the SCR 4 is
electrically connected with the junction of the first resistor 5 and the
second resistor 6. The indicator 7 is electrically connected with a third
resistor 12 in series. Another terminal of the third resistor 12 is
electrically connected with the junction of the first resistor 5 and the
inductor 3. Another terminal of the indicator 7 is electrically connected
with the junction of the second resistor 6 and the safety capacitor 2.
The two terminals of the two ceramic capacitors 1 in series are further
electrically connected with the neutral wire 9 and the live wire 10
respectively. The fuse 11 is electrically connected with the live wire 10
in series for protection. The ground wire arrangement 8 is made of metal
and encircles the peripheral of elements of the device.

[0025]In the present invention, the ceramic capacitor 1 and safety
capacitor 2 are elements which can store electrical energy. During the
charging and discharging, the ceramic capacitor 1 and the safety
capacitor 2 will stabilize the voltage. The safety capacitor 2 and the
inductor 3 are electrically connected in series, and the inductor 3 can
prevent the change of the current, and avoid disturbance of the voltage.
The SCR 4 is used as a controllable switch, wherein it can control
relatively large unstable voltage through relatively small energy. The
first resistor 5 and the second resistor 6, which are used as voltage
division, supply voltage to the safety capacitor 2, inductor 3, SCR 4,
and indicator 7. The ground wire arrangement 8 is for circuit protection.
The fuse 11 is used to protect the power-saving device.

[0026]Referring to FIG. 2, the second embodiment of the single-phase
electronic power-saving device is illustrated. In this embodiment, the
single-phase electronic power-saving device comprises two power-saving
units, named as a strong power-saving unit, and a weak power-saving unit
respectively, electrically coupled with each other. The structures of the
two power-saving units are same. Each of the power-saving units comprises
two ceramic capacitors 1, a safety capacitor 2, an inductor 3, a SCR 4, a
first resistor 5, a second resistor 6, an indicator 7, a ground wire
arrangement 8, a live wire 9, a neutral wire 10, a fuse 11, and a third
resistor 12. The structure of each unit is illustrated as FIG. 1. The
difference between these two units is that the charge of the elements 1
to 4, i.e. the ceramic capacitors 1, the safety capacitor 2, the inductor
3 and the SCR 4. Accordingly, the charge of the ceramic capacitors 1, the
safety capacitor 2, the inductor 3 and the SCR 4 of the strong
power-saving unit is larger than the charge of the ceramic capacitors 1,
the safety capacitor 2, the inductor 3 and the SCR 4 of the weak
power-saving unit. In the embodiment, the power-saving units are
electrically connected in series that the ceramic capacitors 1 of one of
the power-saving units are electrically connected with the ceramic
capacitors 1 of another power-saving unit in parallel. The two terminals
of the two ceramic capacitors 1 in series are further electrically
connected with the neutral wire 9 and the live wire 10 respectively. Also
the device comprises a ground wire arrangement 8.

[0027]In the present invention, the two power-saving units could be the
same, which means no difference in the charging. The device can comprise
more than two power-saving units, and the units are electrically
connected with the neutral wire 9 and the live wire 10 through the two
terminals of the two ceramic capacitors 1 in series.

[0028]Referring to FIG. 3, the embodiment of the three-phase electronic
power-saving device is illustrated. The three-phase electronic
power-saving device is integrated by three single-phase electronic
power-saving units. Each single-phase electronic power-saving unit is the
same which is illustrated in FIG. 2. In this device, all the neutral
wires 9 of the three single-phase electronic power-saving devices are
electrically connected together to form a common neutral wire. The three
live wires 10 of the three single-phase electronic power-saving devices
are electrically connected in parallel, such that the three live wires 10
are extended separately.

[0029]The process of the installation of the present invention is:

[0030]For single-phase electronic power-saving device, generally speaking,
the consumer electronic equipment can connected with one set (or multiple
sets in parallel). It is better to be installed after the ammeter, and
before the equipment. Connect the neutral wire with the neutral wire of
the power source, connect the live wire with the live wire of the power
source, and connect the ground wire arrangement with the ground wire. If
necessary, the first embodiment illustrated in FIG. 1 and the second
embodiment illustrated in FIG. 2 can be paralleled to use.

[0031]For three-phase electronic power-saving device, the process
comprises the steps of: connecting the neutral wire with the neutral wire
of the power source, connecting the three live wires with the live wires
of the power source, and connecting the ground wire arrangement with the
ground wire. It is better to install the device after the ammeter, and
before the equipments or motors. The installation can be adjusted
according to the electric load and the types of the equipments. For
example, multiple three-phase electronic power-saving devices can be used
for larger load.

[0032]FIGS. 4 to 6 explain the theory of the power-saving device, and
illustrate the difference of the current and voltage before and after
using the device. Referring to the FIGS. 4 to 6, before using the
power-saving device, the voltage of the power source is not stable, and
has different pulses. It obviously will introduce energy waste. After
using the power-saving device, the voltage of the power source is
stabilized, the pulses are filtered. The smoothed current will reduce the
energy waste, reduce the wire temperature, and protect the equipments.

[0033]The present invention can be used to gradually remove the carbon
accumulated on the wires which is caused by high-order harmonics. So the
longer time of the power-saving device is used, the better the effect is.
The present invention has the advantages of simple structure, low cost,
and can be wildly used with single-phase electronic equipment, such as
air conditioner, refrigerator, motor, computer, water heater, washer,
copy machine, lights; or use with three-phase electronic equipment such
as central air conditioner, refrigeration system, water pump, air
compressor, injection molding machine, and other three-phase electric
machines, motors. It is valuable in industry and residential
applications, the power-saving efficiency can be 20%˜30%.

[0034]One skilled in the art will understand that the embodiment of the
present invention as shown in the drawings and described above is
exemplary only and not intended to be limiting.

[0035]It will thus be seen that the objects of the present invention have
been fully and effectively accomplished. It embodiments have been shown
and described for the purposes of illustrating the functional and
structural principles of the present invention and is subject to change
without departure from such principles. Therefore, this invention
includes all modifications encompassed within the spirit and scope of the
following claims.

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